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Measurements of isomeric yield ratios of fission products from proton- induced fission on natU and 232Th via direct ion counting
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
University of Jyväskylä, Department of Physics, Jyväskylä, Finland.
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2017 (English)In: ND 2016: INTERNATIONAL CONFERENCE ON NUCLEAR DATA FOR SCIENCE AND TECHNOLOGY / [ed] Plompen, A.; Hambsch, FJ.; Schillebeeckx, P.; Mondelaers, W.; Heyse, J.; Kopecky, S.; Siegler, P.; Oberstedt, S., Les Ulis: EDP Sciences, 2017, Vol. 146, article id 04054Conference paper, Published paper (Refereed)
Abstract [en]

Independent isomeric yield ratios (IYR) of 81Ge, 96Y, 97Y, 97Nb, 128Sn and 130Sn have been determined in the 25 MeV proton-induced fission of natU and 232Th. The measurements were performed at the Ion Guide Isotope Separator On-Line (IGISOL) facility at the University of Jyväskylä. A direct ion counting measurement of the isomeric fission yield ratios was accomplished for the first time, registering the fission products in less than a second after their production. In addition, the IYRs of natU were measured by means of γ-spectroscopy in order to verify the consistency of the recently upgraded experimental setup. From the obtained results, indications of a dependence of the production rate on the fissioning system can be noticed. These data were compared with data available in the literature, whenever possible. Using the TALYS code and the experimentally obtained IYRs, we also deduced the average angular momentum of the fission fragments after scission.

Place, publisher, year, edition, pages
Les Ulis: EDP Sciences, 2017. Vol. 146, article id 04054
Series
EPJ Web of Conferences, ISSN 2100-014X
National Category
Subatomic Physics
Identifiers
URN: urn:nbn:se:uu:diva-319348DOI: 10.1051/epjconf/201714604054ISI: 000426429500153ISBN: 978-2-7598-9020-0 OAI: oai:DiVA.org:uu-319348DiVA, id: diva2:1086629
Conference
ND 2016: International Conference on Nuclear Data for Science and Technology, 11-16 september 2016, Bruges, Belgium
Funder
Swedish Radiation Safety AuthoritySwedish Nuclear Fuel and Waste Management Company, SKBAvailable from: 2017-04-03 Created: 2017-04-03 Last updated: 2018-07-03Bibliographically approved

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Rakopoulos, VasileiosLantz, MattiasAl-Adili, AliMattera, AndreaProkofiev, Alexander V.Solders, AndreasPomp, Stephan
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